I have run a RGZPFM with ALWCANCEL(*YES) RBDACCPTH(*OPTIMIZE)over a large file on a couple of occasions. After 14hrs the job is ended as the file is needed by applications. According to the IBM Website at the next run of this command the system will determine if the Re-org will pick up where it left off or if to start from scratch again, depending on the number of changes made to the file. I'm wondering if there is a way to tell in advance which option the system will take at next run, If the file is just starting again each time from scratch then there is no point running the re-org as it will not complete in the window, so no benefit is being gained. Anyone know the rule? Changing the file to reuse deleted records is not an option.